Channel shaped sheet metal nail



Oct. 16, 1962 J. E. ABRAHAMSEN CHANNEL SHAPED SHEET METAL NAIL Filed Jan. 12, 1959 INVENTOR ATTORNEY JOHA /v EABRAHA MSEN BY fl Q.

3,058,335 Patented Oct. 16, 1962 3,058,385 CHANNEL SHAPED SHEET METAL NAIL Johan E. Abrahamsen, Long Island, N.Y. (566 Keller Ave., Elmont, N.Y.) Filed Jan. 12, 1959, Ser. No. 786,071 1 Claim. (Cl. 85-11) This invention relates to drivable fastening means and more particularly to a metallic nail shaped into channel form from sheet stock.

The advent of nailing machines equipped with semiautomatic nail magazines has made it necessary to provide nails which can be operably used in such devices. Such nails characteristically must be configured so that they can be closely nested one against another in both rank and file directions. Further, the nails must be inexpensive to manufacture to compete in a market dominated by mass produced wire nails.

My invention provides a nail which can be fashioned from a sheet metal blank simply and with little metal waste occurring during the stamping operation. An ap proximately rectangular metal blank is bent into a channel of substantially a U cross section or V cross section with one end extremity of the channel section folded 90 degrees so as to cap the cross-sectional area defining sides of the channel form.

The form of the nail, although extremely simple, provides a fastening means that is inexpensive to manufacture and that can be conveniently nested or juxtaposed in a nail magazine and that can be operably driven to fasten material without having exposed an elevated head and without necessitating gouging of the surface of the work thereby to render it unsightly in appearance.

For the foregoing reasons my invention provides functional advantages over other nails designed for use in nailing machines such as are described in US. Patent No. 2,593,647 and over other sheet metal nails as are described in U. S. Patent 727,111.

It is an object of this invention to provide a nail which can be operably used in a nailing machine.

It is a further object to provide a nail which can be manufactured from sheet metal stock so as to entail a minimum waste of material.

Another object is to provide a nail, the use of which would destroy only to a minimum extent the surface of the work being nailed.

Other objects will become apparent from the drawings.

FIGURE 1 is an elevation of a stamping blank from which the invention is fashionel.

FIGURE 2 is a perspective view of the invention.

FIGURE 3 is a perspective view of another embodiment of the invention.

FIGURE 4 is a perspective view of another embodiment of the invention.

In FIGURE 1 is shown a sheet metal blank stamped from sheet stock. It is apparent that waste is confined to four small triangular pieces located adjacent to the end extremities of blank 10. The trapezoidally shaped upper end extremity 11 which in the finished nail is bent through degrees to form the head thereof has interior angles other than 90 degrees, preferably about 60 degrees for the acute angles 12 and 12' and degrees for the obtuse angles 13 and 13'. It is to be understood that the angle formed between the outer walls of the nail should be sufficient to permit the nails to be juxtaposed in closely nested position in a nail magazine and to be easily separated and slidably moved one over an other. It is, therefore, necessary that the flanking walls of each nail define obtuse angles with the intermediate wall of the nail positioned therebetween.

FIGURE 2 is a perspective view of a nail 19 fashioned from the blank of FIGURE 1. Front wall 20' is flanked by side walls 21 and 22 positioned at an obtuse angle thereto and the channel formed thereby is trapezoidal in cross-section and is abutted by head 23 at the upper extremity thereof. It is apparent that a plurality of nails 19 can be juxtaposed in a stack so that head 23 of one nail overlaps head 23 of a similarly oriented adjacent nail.

FIGURE 3 shows the upper extremity of a diflerent embodiment of the invention. Nail 23 as shown is of substantially right angular shape in transverse cross section. Nail 25 is comprised of walls 26 and 27 defining an angle which may be either acute or right angular, and of head 28 which is triangular in shape.

FIGURE 4 shows the nail of FIGURE 3 with a differently configured head. Nail 30 is comprised of walls 31 and 32 and head 33 of square configuration. The square configuration of head 33 facilitates the transfer of the nail in a nailing machine from a nail maganize to driving position by having a larger head area onto which the transfer mechanism makes contact.

Having thus described my invention I claim:

A sheet metal nail comprised of a plane rectangularly configured front wall, two straight edged plane side portions integral with opposite sides of said rectangular front wall substantially throughout the length of said rectangular front wall and the angle included between said front wall on each said side portions being an obtuse angle, to define a channel-shaped member substantially trapezoidal in transverse cross-section, a trapezoidally shaped head portion integral with said rectangular front wall and disposed at one end thereof so as to form a right angle thereto and to fiushly abut against said side portions, said head portion having substantially the configuration of said channel cross-section whereby it does not extend beyond the extremities thereof.

References Cited in the file of this patent UNITED STATES PATENTS 727,111 Duffy May 5, 1903 2,751,052 Flora June 19, 1956 FOREIGN PATENTS 659,331 France Feb. 4, 1929 808,279 Germany July 12, 1951 663,157 Great Britain Dec. 19, 1-951 

